Bur-wheel.



PATENTEDJ-AN. 3, 1905.

vR. W. G'URMLY.

BUR WHEEL.

APPLIOATIDN FILED ooT. 24, 1903.

2 SHEETS-SHEET 1.

10.778,857. A PATENTED JAN.3,1905.

' R. W. GORMLY.

BUR WHEEL.

APPLICATION FILED 00T. 24, 1903.

2 SHEETS-SHEET 2.

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Patented January 8, 1905.

PATENT EErfcE.

ROBERT W. GORMLY, OF TROY, NEW YORK.

BUR-WHEEL.

SPECIFICATION forming part of Letters Patent No. 778,857, dated January 3, 1905.

Application filed October 24, 1903. Serial No. 178,328.

To whom, it may concern,

Be it known that I, ROBERT W. GORMLY, a citizen of the United States, residing at Troy, county of Rensselaer, and State of New York, have invented certain new and useful Improvements in Bur-VVheels, of which the following is a specification.

rlhe invention relates to such improvements; and it consists of the novel construction and combination of parts hereinafter described and subsequently claimed.

Reference may be had to the accompanying drawings and the reference characters marked thereon, which form a part of this specification.

Similar characters refer to similar parts in the several figures.

Figure 1 of the drawings is a view in side elevation of my improved bur-wheel. is a diametrical section of the same. Fig. 3 is a transverse section of the same, partly broken away, the section being taken on the broken line 3 3 in Fig. 1. Fig. 1 is a plan view of one of the blades detached. Fig. 5 is a plan view of one of the presser-blocks detached. Fig. 6 is a side view of the presserblock shown in Fig. 5. Fig. 7 is a plan view of the inner side of the grooved washer or clamping-plate. Fig. 8 is a central cross-section of the same. Fig. 9 is a plan view of the grooved end of the hub.

The invention relates to bur-wheels used in feeding yarn to the needles of a circular-knitting machine, and more particularly to burwheels in which it is desired to till or partially fill the needle-spaces between certain blades in the wheel.

Certain objects of the invention are to more positively secure the blades in the wheel and to provide a more durable support for the presser-blocks used in such a wheel.

Other objects of the invention will appear in connection with the .following description.

Referring to the drawings, wherein the invention is shown in its preferred form, 5 is the hub of the wheel, which is preferably made of brass or similar easilyworkable metal, said hub being provided with oblique slots 6, adapted to contain the wings or blades 7, which are secured. in their slots by means Fig. 2

of an annular clampingplate or washer 8, which presses upon the Shanks of the blades and holds the beveled part 9 of each blade in an annular end groove 10, formed in the hub, the clamping-plate being forced against the Shanks of the blades by means of the bearingsleeve or bushing 12, which passes through central apertures in the hub and clampingplate and is provided on one end with a head or Hangs 14, adapted to bear upon said plate, and on its other end with the screw-threaded portion 15, adapted to receive a clampingnut 16.

The construction as above described is substantially the same as that shown and described in the Kavanaugh patent, No. 117,299, dated July 25, 1871, to which patent reference may be had for a more complete understanding of such construction.

It is well known to those skilled in the art of knitting that it is desirable in making certain kinds of goods to omit the knitting' of a stitch by certain of the needles during certain rotations of the knitting-cylinder. This has been accomplished by filling or partly filling the needle-space between two blades of the bur-wheel used in feeding the yarn to the needles with a block, which may be termed a presserblock. The manner of operation of such wheels and presser-blocks is well understood in the art and need not be particularly described in this specification.

The blade-receiving slots 6 in the hub occupy planes radial to the center of the hub, though arranged obliquely to its axial line, for which reason the spaces between the blades inserted in the oblique slots taper toward the center of the hub. For this reason the presserblocks 25, which are inserted between certain of the blades, are made thicker at their outer needle-engaging edge 21 than at their inner attaching edge, taperingto correspond with the needle-spaces, so that the blocks will approximately till said spaces when inserted therein, as shown in Fig. 3. As a means for securing the blocks in the spaces between the blades the blocks are severally provided on their inner edge with an attaching-shank 2Q, adapted to enter the circumferential groove 23 in the hub, which is cut deeper than the oblique slots,

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and the attaching-shank is provided with an offset or hook 24, adapted to pass behind the inner edge of a neighboring blade and engage therewith to prevent the removal of the block, as shown in Fig. 3. The attaching-shank may be a little wider than the groove, because it ,extends obliquely or diagonally across the groove.

The blades may be inserted in the hub in the usual manner, and while the blades are being inserted the required needle-spaces are severally filled with a block, which is placed against the last-inserted blade with its shank in the groove 23 and its hook 24 extending behind said blade, and a blade is inserted in the nex't oblique slot, which prevents the block from being disengaged without removing a blade. After all the oblique slots are filled with blades and the desired number of needlespaces filled with blocks, as aforesaid, the clamping-plate 8 is forced into engagement with the shanks of the blades by means of the flanged bushing 12 and nut 16.

One feature of my invention consists in providing the several blades on the end opposite the shank 9 with a tongue or lip 1, having a beveled surface 2, which lip or tongue is adapted to project beyond the end of the hub opposite the end provided with the groove 10 and fit a correspondingly-formed annular groove 4 in the inner face of a clamping-plate or washer 3, interposed between the nut 16 and the neighboring end of the hub. When the nut 16 is tightened, all the blades are confined between the two clamping-plates or washers 3 and 8, which, in connection with the hub, serve t'o positively support and look the opposite ends of the blades against displacement. As heretofore constructed wheels of the Kavanaugh type have been provided with means for locking the blades only at their shank ends, leaving their other ends unlocked and free to yield to pressure tending to force them out of the oblique slots.

Another feature of my invention consists in extending the presser-blocks at their opposite ends beyond the ends of the hub into engagement with the peripheral surfaces of the washers 3 and 8, as shown in Fig. 1. These washers or clamping-plates are made of relatively hard material, as hardened steel, well adapted to withstand the wearing action of the blocks thereupon due to the thrust of the needles against the blocks in use, and it is thus possible to entirely relieve the .hub from such wearing action of the blocks, permitting the hub to be made of relatively soft material, such as brass, which can easily be worked into the desired shape and provided with the oblique slots to receive the blades.

For certain purposes of my invention the presser-blocks may be secured in the wheel in any known manner, and means other than that shown may be employed for locking the blades in position.

My invention is applicable to various kinds of bur-wheels for use in knitting-machines.

From an inspection of Fig. 2 it will Abe seen that the pressure of the washer 3 is transmitted to the hub 5 through the presser-blocks 25 and their shanks, thereby enabling said hub to resist the pressure of the washer 8 in clamping between said washer 8 and the hub the shanks 9 of the blad es, which are thereby locked in position independently of the nibs 1 and groove 4. Should the presser-blocks be omitted, the washer 3 can be sprung sufliciently at its central portion and forced inwardly thereat into engagement with the hub by means of the nut 16 to afford the necessaryresistance to the clamping action of the washer 8.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a bur-wheel, the combination with a hub of relatively soft material provided with a series of slots in its periphery; and a series of blades secured in said slots; of a washer of relatively hard material secured adjacent to an end of the hub; and a presser-block secured between two neighboring blades extending beyond the hub into engagement with said washer. i

2. In a bur-wheel, the combination with a hub of relatively soft material provided with a series of slots in its periphery; and a series of blades secured in said slots; of apair of washers of relatively hard material secured adjacent to the opposite ends of the hub; and a presser-block securedl between two neighboring blades extending at its opposite ends beyond the hub into engagement with said washers respectively.

3. In a bur-wheel, the combination with a hub of relatively soft material provided with a series of slots and a circumferential groove in its peripheral portion; of a series of blades secured in said slots; a pair of washers of relatively hard material secured adjacent to the opposite ends of the hub; and a presser-block interposed between two neighboring blades, said block having a shank inserted and secured in the circumferential groove in the hub and having its opposite ends extended beyond the hub into engagement with said washers respectively.

4. In a bur-wheel, the combination with a hub of relatively soft material provided with a series of slots and a circumferential groove in its peripheral portion; of a series of blades secured in said slots; a pair of washers of relatively hard material secured adjacent to the opposite ends of the hub; and a presser-block interposed between two neighboring blades, said block having a shank inserted in said circumferential groove in the hub and on said shank a hook engageable with a neighboring blade, the opposite ends of the block being extended beyond the hub into engagement with said washers respectively.

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5. In a bur-wheel, the combination with a hub provided with a series of slots in its periphery and in one end with an annular groove; oi' a series of blades inserted in said slots each having at one end a shank projecting beyond the grooved end of the hub and located in said groove, and at its other end a tongue project ing beyond the other end of the hub; a washer adjacent to the grooved end of the hub engageable with the projecting Shanks of the blades; a washer adjacent to the other end of the hub provided with an annular groove adapted to receive the projecting tongues oi' the blades; and means for forcing the Washers toward each other to clamp the interposed blades therebetween and their shanks between the hub and shank-engaging washer.

6. In a bur-Wheel, the combination with a hub of relatively soft material provided with a series of slots in its periphery and in one end w'ith an annular groove; of a series ofblades inserted in said slots each having at one end a shank projecting beyond the grooved end of the hub and located in said groove, and at its other end a tongue projecting beyond the other end of the hub; a washer of relatively hard material adjacent to the grooved end of the hub engageable with the projecting Shanks of the blades; a washer of relatively hard material adjacent to the other end of the hub provided with an annular grooveadapted to receive the projecting tongues of the blades; means for forcing the washers toward each other to clamp therebetween the interposed blades; and a presser-block secured between two neighboring blades extending beyond the j hub at its opposite ends into engagement with said washers respectively.

In testimony whereof I have hereunto set my hand this 21st day ofOctober, 1903.

.ROBERT W. GORMLY. Witnesses:

FRANK C YCURTIs, E. M. OREILLY. 

